St. Patrick’s Day—commonly dubbed St. Party’s Day—is about more than green beverages and parades.

Even if the actual event falls on a weekend, it has historically affected stock markets on the trading days both before and after people flock to pubs around the globe.

So, could your clients benefit from adding a little green to their portfolios?

A post by equityclock.com says beer sales have consistently risen leading up to St. Patrick’s Day over the last decade. Though many food conglomerates sell more than beer, a surge in the sales of smaller brewing companies could positively impact stocks.

It adds the value of Irish institutions and airlines often increase following the holiday since people are more interested about the culture and country.

This trend even survived throughout the 2008-2009 recession, with the S&P 500 posting an average rise of 3.8% from March 15 to March 18 over that two-year period, reports Seekingalpha.com.

What’s more, investing in Ireland could be profitable over the long term; it’s considered one of the world’s most globalized nations in terms of GDP by Ernst and Young’s globalization index. It’s retained this high standing since 1995, and is expected to remain one of the top nations on the index until 2015. Read more.

Read: Ireland launches fund for women entrepreneurs

It also recently sold €5 billion of its 10-year bonds. This is a strong indication investors are willing to finance the government following the bailout loans slated for later this year, says The Wall Street Journal.

For those who want to stick to simple celebrating, though, don’t forget to head home with some party and recipe ideas (involving Guinness of course) before leaving the office.

Also read:

Help clients overlook seasonal trends

Seasonal investing gets an outlet

Do the holidays make people cheap?

How to make up for holiday splurges

Don’t let your holiday party run wild

Daylight saving time can impact markets

Halloween effect is tricks, not treat: study